Find all School-related info fast with the new School-Specific MBA Forum

It is currently 25 Oct 2014, 11:24

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

The probability that a visitor at the mall buys a pack of

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
User avatar
Joined: 30 Jul 2007
Posts: 130
Followers: 2

Kudos [?]: 9 [0], given: 0

The probability that a visitor at the mall buys a pack of [#permalink] New post 10 Sep 2008, 17:37
The probability that a visitor at the mall buys a pack of candy is 30%. If three visitors come to the mall today, what is the probability that exactly two will buy a pack of candy?

* 0.343
* 0.147
* 0.189
* 0.063
* 0.027
VP
VP
User avatar
Joined: 05 Jul 2008
Posts: 1435
Followers: 35

Kudos [?]: 226 [0], given: 1

Re: m04 - probability candy [#permalink] New post 10 Sep 2008, 17:44
Probability of buying is 3/10 Not buying is 7/10

So its 3/10 X 3/10 X 7/10

2 out of 3 can be picked in 3 C 2 ways

hence 3 X 3/10 X 3/10 X 7/10 = .189
Manager
Manager
User avatar
Joined: 30 Jul 2007
Posts: 130
Followers: 2

Kudos [?]: 9 [0], given: 0

Re: m04 - probability candy [#permalink] New post 10 Sep 2008, 17:50
icandy wrote:
Probability of buying is 3/10 Not buying is 7/10

So its 3/10 X 3/10 X 7/10

2 out of 3 can be picked in 3 C 2 ways

hence 3 X 3/10 X 3/10 X 7/10 = .189


Cool. Thanks. That is the OA.
Re: m04 - probability candy   [#permalink] 10 Sep 2008, 17:50
    Similar topics Author Replies Last post
Similar
Topics:
The probability that a visitor at the mall buys a pack of lalmanistl 1 11 Oct 2008, 12:36
3 The probability that a visitor at the mall buys a pack of stingraybullray 4 14 Jun 2008, 08:18
The probability that a visitor at the mall buys a pack of Amit05 1 24 Nov 2007, 07:45
14 Experts publish their posts in the topic The probability that a visitor at the mall buys a pack of yuefei 18 16 Nov 2007, 08:27
10 Experts publish their posts in the topic The probability that a visitor at the mall buys a pack of bmwhype2 21 13 Nov 2007, 08:20
Display posts from previous: Sort by

The probability that a visitor at the mall buys a pack of

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.